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|Title:||Structural ordering in a silica glass matrix under Mn ion implantation|
|Authors:||Zatsepin, D. A.|
Green, R. J.
Kurmaev, E. Z.
Gavrilov, N. V.
|Citation:||Structural ordering in a silica glass matrix under Mn ion implantation / D. A. Zatsepin, R. J. Green, A. Hunt, E. Z. Kurmaev, N. V. Gavrilov, A. Moewes // Journal of Physics Condensed Matter. — 2012. — Vol. 24. — № 18.|
|Abstract:||Mn +-implanted, amorphous SiO 2 samples were synthesized using pulsed-ion implantation without thermal annealing. The crystal and electronic structures have been studied using x-ray diffraction and synchrotron-based soft x-ray absorption and emission spectroscopy at the Si and Mn L 2,3 edges. We find a combination of small MnO clusters and Si crystallites at shallow depths while tetrahedral Mn coordination is found deeper in the host target. Through a combination of techniques, we find that the implantation process simultaneously decreases the long-range order in the near-surface region and increases order deeper in the SiO 2 host. Our results suggest Mn substitution into Si sites at deep levels catalyzes the formation of α-quartz, providing insight into the complex interactions that determine the local structure around the impurities as well as the overall changes to the crystallinity of implanted SiO 2. © 2012 IOP Publishing Ltd.|
|Appears in Collections:||Научные публикации, проиндексированные в SCOPUS и WoS CC|
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